Fireplace heater



Sept. 25, wzs 1% W. J. GROTH FIREPLACE HEATER Filed March 26, 1923 IN VENTOR.

ATTORNEY Patented Sept. 25, 1923.

WILLIAM J. GBOTH, OI LOS ANGELES, CALIFORNIA.

FIREPLACE HEATER.

Application filed lfarch 26, 1923. Serial No. 627,608.

To all whom it may concern:

Be it known that I, WILLIAM J. GnorH, a citizen of the United States, residin at Los Angeles, county of Los Angeles, tate of California, have invented new and useful Improvements in Fireplace Heaters, of which the following is a specification.

This invention is a heater. for use in connection with an open fireplace, and it is the object of the invention to provide an air chamber or conduit receiving fresh air from a suitable source, and arran ed so that the heat from the fireplace is directed against said chamber in order to heat the air passing through the same, the heated air being discharged at a suitable point;

It is a further object of the invention to provide an air chamber positioned at the rear and upper portion of the fireplace, and extending across the smoke flue for discharge into a room at a point above the fireplace, the portion of the air chamber extending across the smoke flue being arranged to permit the smoke being readily drawn into said flue, and-said ortion of the air chamber cooperating wit suitable closure means to control the passageway through said flue, and thereby form a damper for the fireplace.

The invention will be readily understood from the following description of the accompanying drawings, in which:

' Fig. 1 is a front elevation of a fireplace having the improved heater mounted therein.

Fig. 2 is a vertical section on the line 2- of Fig. 1.

Fig. 3 is a front elevation of the heater unit.

F i 4 is a fragmentary detail section on the line 2- -2 of Fig. 1.

A fireplace having the im roved heater mounted therein is illustrate in the drawings as a brick structure built against the outer-wall 1 of a house. The fire lace includes a rear wall of substantial t ickness. andsides 2 and top 3 extending outwardly from the rear wall and forming a usual fire space or recess 4 in the lower portion of the fireplace structure at the front thereof.

The lower portion 5 of the rear wall of the fireplace structure has a vertical front surface, and the upper portion 6 of said wall has a front surface slanting upwardly and forwardly. The sides of the fireplace structure are recessed as shown at 7 at their junction with wall 6, and a smoke flue 8, the width of the fire space 4 and the recesses 7, extends upwardly for a short distance through the fireplace structure, at the top of the fire space. 4 and in front of wall 6, said flue then extending rearwardly through the fireplace structure overthe top of wall 6, and terminating in a vertical chimney 9 positioned against wall 1 of the house.

Avertical flue10, preferably only partly the width of fire space 4, is formed in wall 5, said flue opening at its upper end into the fire space at a oint spaced below the base of wall 6,and the lower end of the flue extends rearwardly through wall 5 and through wall 1 of the house, so as to open to the outer atmosphere, for the admission of fresh air.

A flue 11 of the same width as smoke flue 8, is open to the front vertical portion of the smoke flue, and extends upwardly through the fireplace structure and thence horizontally outwardly through the top portion of the fireplace structure, so as to open into theroom in which the fireplace is built, at a point spaced above the fire space 4.

The'heater mounted in the fireplace as thus described, is a box-like structure having front and rear walls 12 and 13, and side walls 14 and upper end wall 15 connecting said side walls, the lower end of the structure being open. v

This box-like structure is mounted against wall 6 with its sidesreceived inrecesses 7, the front lower edge of the structure resting upon a ledge 16formed u the base of flue opening .10, so t at the lower open end of the structure is received against wall 5 and over the opening of flue 10, for discharge of fresh air from said flue into the heating box.

The upper end wall 15 of the heating box is at the upper end of wall .6 and at the base of the smoke flue, and transveresly spaced pipes 17 project beyond wall 15 across the smoke flue to the end of flue 11 which opens into said smoke flue, the spacing of said pipes permitting of the free passage of smoke through flue 8 between said pipes.

A plate 18 is mounted upon the ends of pipes 17 and is adapted to fit in the end of flue 11 in horizontal position, and an an le i n 29 extends across the fire space 4, w th 11 wall 5 at one arm thereof against the .masonary at the top of said fire space, and the other arm of said angle iron against the front wall of the vertlcal portion of smoke flue 8, the edge of plate 18 being adapted to be hooked over the angle iron as shown at 19, in order to support the upper end of the heater in position within the fireplace. A plate 20 preferably extends upwardly from the rear edge of plate 18 and is received against the rear wall of the vertical portion of flue 11.

It will thus be seen that the improved heater is a unitary structure including the box-like heating chamber, pipes 17, and plates 18 and 20. The heating unit may be readily mounted in a fireplace, and in operation, fresh air is drawn into the heating chamber of the device through flue 10, and is heated by the fire, the heated air passing through it is disc arged into the room( The smoke from the fireplace is drawn through flue 8 into" chimney 9, and is prevented from entering flue 11 by plate 18 closing the latter.

A damper is preferably provided for the smoke flue of the fireplace, said damper comprising a closure plate cooperating 'with pipes 17 which extend across the smoke flue, to regulate the opening through said flue. As an instance of this arrangement, a plate 21 is'hinged at 22 to the rear edge of end wall .15 of the heating, box, said plate being ada ted to be swung forwardly and downward y so as to rest upon pipes 17 and close the passage through the smoke flue, or to beswung upwardly and rearwardly to any desired degree, so as to form an opening of desired size through the flue.

The damper plate 21 is preferably actuated by a rod 23 extending forwardly to the front of the fireplace below the top wall of fire space 4. The rod may be pivoted to plate 21 as shown at 24, and a handle 25 is provided at the front end of the rod. The portion of the rod adjacent the handle is notched as shown at 26, with said notches adapted to be engaged by a supporting bracket 27-dependin from the masonry of the fireplace, in or er to adjustably position the operating rod and thereby regulate the damper opening. I

I claim:

1. A fireplace structure having a fire space, a smoke flue at the top of said fire space and extending through said fireplace structure; an air conduit in said fire space and having a fresh air inlet, pipes extending across said smoke flue from said air conduit to form a hot air discharge, and a damper comprising a closure plate hinged to said air conduit at its junction with said ipes and mounted in said smoke flue exten ing across said pipes, said plate ipes 17 into flue 11 from whencemeaeee being adapted to be swung away from said pipes to open said smoke flue, and to be swung into position resting upon said pipes for closing said smoke flue.

2. An air heater for a fireplace comprising a heating box having a fresh air inlet at .its base, discharge pipes transversely spaced and projecting from the upper end of said box, and a damper plate hinged to said box at its junction with said pipes and adapted to extend across said (pipes and the spaces between the same, sai damper plate being adapted to be swung away from said pipes to open the damper, and to be swung into position resting upon said pipes for closing the damper.

3. The combination of a fireplace structure including a vertical rear wall havin a fresh air opening therethrough and term1- nating at its upper end in a forwardly and upwardly inclined wall, and an air heater comprising a box having a hot air discharge at its upper end and an open lower end angularly disposed with relation to the sides of said box, whereby said lower end is adapted to overlie said fresh air opening and fit siliugly against the vertical wall of said firep ace.

4. The combination of a fireplace structure including a vertical rear wall having a fresh air opening therethrough and terminating at its upper end in a forwardly and upwardly inclined wall, and an air heater comprising a box having a hot air discharge at its upper end and an open lower end angularly disposed with relation to the sides of said box, whereby said lower end is adapted to overlie said fresh air opening with its lower edge resting upon the lower edge of said opening and the angularly disposed edges of said lower end fitting snugly against the vertical wall of said fireplace.

5. The combination with a fireplace comprising transversely spaced side walls and an inwardly spaced rear wall connecting the same and having transversely extendin recesses at the junctions of said rear wall an side walls, of an air heater comprising a box having a hot air discharge and a fresh air inlet at its upper and lower ends respectively, said box being fixed against said rear wall by the sides thereof received in said recesses.

6. The combination of a fireplace structure including a vertical rear wall having a fresh air opening therethrough and tenninating at its upper end in a forwardly and upwardly inclined wall having a smoke flue at the upper end thereof extending through said fireplace structure, an air heater comprising a box adapted to be received against said inclined wall and havin an open lower end angularly disposed with relation to the sides of said box, whereb said lower end is adapted to overlie sa-i messes fresh air ning'and fit snugly against the vertical we of said fire lace, pipes extending across said smoke fl iie from the upper end of said box to form a hot air discharge, 5 and a damper hinged to said box at its junction with said pipes and mounted in said smoke flue, said damper being adapted to be swung away from said pipes to open said smoke flue and to be swung into position resting upon said pipes for closing the 10 smoke flue.

In testimony whereof I have signed my name to this specification WILLIAM J. GROTH. 

